Website Structure

Frontend-Learner/node_modules/eslint-plugin-regexp/dist/rules/no-empty-character-class.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const regexp_ast_analysis_1 = require("regexp-ast-analysis");
+const utils_1 = require("../utils");
+exports.default = (0, utils_1.createRule)("no-empty-character-class", {
+    meta: {
+        docs: {
+            description: "disallow character classes that match no characters",
+            category: "Possible Errors",
+            recommended: true,
+        },
+        schema: [],
+        messages: {
+            empty: "This character class matches no characters because it is empty.",
+            cannotMatchAny: "This character class cannot match any characters.",
+        },
+        type: "suggestion",
+    },
+    create(context) {
+        function createVisitor(regexpContext) {
+            const { node, getRegexpLocation, flags } = regexpContext;
+            return {
+                onCharacterClassEnter(ccNode) {
+                    if ((0, regexp_ast_analysis_1.matchesNoCharacters)(ccNode, flags)) {
+                        context.report({
+                            node,
+                            loc: getRegexpLocation(ccNode),
+                            messageId: ccNode.elements.length
+                                ? "cannotMatchAny"
+                                : "empty",
+                        });
+                    }
+                },
+                onExpressionCharacterClassEnter(ccNode) {
+                    if ((0, regexp_ast_analysis_1.matchesNoCharacters)(ccNode, flags)) {
+                        context.report({
+                            node,
+                            loc: getRegexpLocation(ccNode),
+                            messageId: "cannotMatchAny",
+                        });
+                    }
+                },
+            };
+        }
+        return (0, utils_1.defineRegexpVisitor)(context, {
+            createVisitor,
+        });
+    },
+});